Woll Diamond Lite/Plus Diamond Reinforced Nonstick Scratch Resistant Cast AluminumWok, 11.75-Inch Extremely cut and scratch resistant, ultra hard coating with embedded diamond crystals and totally non-stick thanks to superfine nanoparticles Cast handle for safe lifting and handling with an integral, threaded brass insert for sturdy, firmly affixed handles Diamonds conduct heat four times as fast as copper allowing the surface to conduct heat evenly with no hot spots Oven safe to 500f/ 260c, and it is metal utensil and dishwasher safe Made in germany, limited lifetime warranty, pfoa free